Pandas DataFrame.groupby().apply() The first line is repeated

Code Sampledf = pd.DataFrame({'A': ['bar','bar','foo', 'foo', 'bar'], 'B': ['one', 'one', 'one', 'thr...

Pandas 3 way joins column suffix looks wrong

Code Sampleimport pandas as pdimport numpy as npdataframe1 = pd.DataFrame(data={'a': np.random.rand(100), 'b': np.ones(1...

Pandas Error message thrown by merge is not helpful.

# Your code heredf1 = pd.DataFrame( {'A' : [1,2,3]})df2 = pd.DataFrame({'B': [1,4,5]})pd.merge([df1,df2], left_index=Tru...

Pandas Inconsistent behaviour with pd.Timestamp ?

Hi,this behavior puzzled me but I am unsure of it is my ignorance or really something wrong.My pandas installation is a ...

Pandas inconsistent behaviour of loc when slicing on multiindex containing numpy.datetime64

Code Sample, a copy-pastable example if possibleimport pandasimport numpydf = pandas.DataFrame({'A': list(range(6)), 'B'...

Pandas Cannot build pandas on AS400

Running the commandpython3 setup.py build_ext --inplacefails on an AS400. I know this isn't a supported system, but the ...

Pandas df.itertuples converts dtypes

Code Sample, a copy-pastable example if possibleimport pandas as pdimport numpy as npprint('pandas version: ', pd.__vers...

Pandas matplotlib autoformat issue when directly calling plt.plot

Failed to format x-axis as Timestampimport numpy as npimport pandas as pdimport matplotlib.pyplot as pltts = pd.Series(n...

Pandas read_csv fails to parsed escaped doubled quoted text which contains comma

Say that test.csv is a file containing the following content. date,description,id2014-09-05,"follow best practices ...

Pandas Using DataFrame.insert leads to the SettingWithCopyWarning

The last line in the following code generates a SettingWithCopyWarning while it obviously shouldn't.import pandas as pdd...

Pandas AttributeError: module 'pandas.core.computation' has no attribute 'expressions'

When Importing Keras using the command "import keras" , I'm getting the Following error//Error """Using TensorFlow backe...

Pandas Partial indexing does not respect key order/repetitions

Code Sample, a copy-pastable example if possibleIn [2]: keys = ['c', 'a', 'b', 'c']In [3]: tm = pd.DataFrame(index=pd.Mu...

Pandas Segfault with array view and "large" dtypes

Code Sampleimport numpy as npimport pandas as pimport pathlib as plimport struct as stmy_type = np.dtype([('1', '<u4'...

Pandas pd.to_timedelta now raise an OverflowError when plot time series data using matplotlib

Code Sample, a copy-pastable example if possible# Your code hereimport numpy as npimport pandas as pdimport matplotlib.p...

Pandas Datetime objects are converted to Timestamp without my consent.

Python datetime.datetime object get converted inside pandas dataframes. This is not in all cases desired. Code Sample```...

Pandas BUG: Series.rank(pct=True, method='dense').max() != 1 for repeated values

Code Sample, a copy-pastable example if possibleimport pandas as pddf = pd.DataFrame(data=[1,2,3,3,3,3,4,4,4,5,5,5], col...

Pandas Unexpected behaviour while dropping

Code Sample, a copy-pastable example if possible>>> ser = pd.Series([f for f in 'abcdefgh'])>>> ser.dr...

Pandas Setting xticks with time series broken in 0.21

Hey. So this worked in 0.20 but not in 0.21:import matplotlib.pyplot as pltxticks = pd.date_range(start="10/10/2017...

Pandas Suggestion: do not sort by default after doing index.difference esp. when performing difference on columns / or print warning

Code Sample, a copy-pastable example if possibleimport pandas as pdimport numpy as npprint("Pandas version: ",...

Pandas Optimize data type

Hi guys, i'm user of mysqlwe have an "function" PROCEDURE ANALYSEhttps://dev.mysql.com/doc/refman/5.5/en/procedure-analy...
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